the phosphorus cycle

biogeochemical

• relating to or denoting the cycle in which chemical elements and simple substances are transferred between living systems and the environment.

how energy moves in this cycle

• Over time, rain and weathering cause rocks to release phosphate ions and other minerals.
• This inorganic phosphate is then distributed in soils and water.
• Plants take up inorganic phosphate from the soil. The plants may then be consumed by animals.
• When the plant or animal dies, it decays, and the organic phosphate is returned to the soil.

how matter moves in the cycle

• Phosphorus is an element that can be found in the DNA structures of organisms.
• Phosphorus is the main limiting growth factor for ecosystems
• because the phosphorus cycle is mainly concerned with the movement of phosphorus between continents and the ocean Read more: http://www.lenntech.com/matter-cycles.htm#ixzz3QtZK2ZBj

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definition of the 1st law of thermodynamics

• any of three principles variously stated in equivalent forms.
• being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done.
• the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work.

2nd law of themodynamics

• a law stating that mechanical work can be derived from a body only when that body interacts with another at a lower temperature; any spontaneous process results in an increase of entropy

relation to the law of conservation of energy

relation to the law of conservation of matter

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